ET WEB_SPECIFIC_APPS D-Link SetWLanRadioSecurity Multiple XML Tags Buffer Overflow Attempt (CVE-2023-44839, CVE-2022-46569)

alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS D-Link SetWLanRadioSecurity Multiple XML Tags Buffer Overflow Attempt (CVE-2023-44839, CVE-2022-46569)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/HNAP1";
    http.request_body;
    content:"|3c 3f|xml|20|version|3d 22|1.0|22|";
    content:"|3c|SetWLanRadioSecurity"; fast_pattern;
    pcre:"/\x3c(?:Key|Encryption)\x3e[^\x3e]{100,}(?:\x3e|$)/";
    reference:cve,2023-44839;
    reference:cve,2022-46569;
    classtype:web-application-attack;
    sid:2065143; rev:1;
    metadata:affected_product D_Link, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_10_10, cve CVE_2023_44839_CVE_2022_46569, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_10_10, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)